Post lamp



FIG. 1 is a front elevational view of a post lamp showing my new design;

FIG. 2 is a left side elevational view thereof, the right side thereofbeing a mirror image;

FIG. 3 is a top plan view thereof; and,

FIG. 4 is a bottom plan view thereof.

The broken lines are shown in FIG. 4 for illustrative purposes only andform no part of the claimed design.

The ornamental design for a post lamp, as shown and described.